I was doing a compression test this weekend as I am trying to determine why I am not reaching max WOT. I recently downsized my prop with very little impact - see the post in the prop section. Anyway, I had the cowl off the engine warming it up and noticed it was spraying fuel from what I assume would be the gasket between the carbs and manifold. Right onto the starter and other electricals. Awesome. Very quickly shut down and dried everything before doing my compression test.
I did not have a wrench to access the bolt around which it seemed to be leaking around. This was the only spot it seemed to be leaking from. So, do you think I am going to need a new gasket? Just a loose bolt? Could this be causing my lack of top end? Compression tested 100-110 across all six with a warm engine. Not sure if that is good or just passable with a warm engine.
I also found my idle issue. It liked to stall after a couple of minutes of idling and ran very rough. The exhaust bypass was stuck against the inside of the cowl and not allowing the exhaust to exit as it should. With that straightened out and the cowl off it ran just fine. I'm assuming it was a combination of too much backpressure and the intakes sucking in exhaust.
I did not have a wrench to access the bolt around which it seemed to be leaking around. This was the only spot it seemed to be leaking from. So, do you think I am going to need a new gasket? Just a loose bolt? Could this be causing my lack of top end? Compression tested 100-110 across all six with a warm engine. Not sure if that is good or just passable with a warm engine.
I also found my idle issue. It liked to stall after a couple of minutes of idling and ran very rough. The exhaust bypass was stuck against the inside of the cowl and not allowing the exhaust to exit as it should. With that straightened out and the cowl off it ran just fine. I'm assuming it was a combination of too much backpressure and the intakes sucking in exhaust.